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7. Income Taxes (Tables)
3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]  
Summary of the temporary differences
    2019     2018  
    ($ in thousands)  
Deferred tax asset            
Net operating loss carryforward   $ 17,312     $ 17,119  
Expenses capitalized under IRC 263(a)     37       37  
Tax credits (AMT)     57       57  
Valuation allowance     (17,406 )     (17,213 )
Total deferred tax asset   $ -     $ -